feat(ui): Sichere Shortcuts, dediziertes Ctrl+S Speichern und kollisionsfreier PDF-Export

src/export.rs

@@ -12,7 +12,7 @@
 use std::error::Error;
 use std::fs::File;
 use std::io::BufWriter;
-use std::path::Path;
+use std::path::{Path, PathBuf};
 
 use printpdf::path::{PaintMode, WindingOrder};
 use printpdf::{Color, Line, Mm, PdfDocument, PdfDocumentReference, Point, Polygon, Rgb};
@@ -22,6 +22,70 @@ use crate::document::{
     Notebook, Page, PageBackground, Stroke, A4_HEIGHT_MM, A4_WIDTH_MM, PAGE_HEIGHT, PAGE_WIDTH,
 };
 
+/// Bereinigt einen Titel für die Verwendung in Dateinamen (entfernt illegale Zeichen).
+pub fn sanitize_filename_component(title: &str) -> String {
+    let sanitized: String = title
+        .chars()
+        .map(|c| match c {
+            '/' | '\\' | '\0' | ':' | '*' | '?' | '"' | '<' | '>' | '|' => '_',
+            c => c,
+        })
+        .collect();
+    let trimmed = sanitized.trim();
+    if trimmed.is_empty() {
+        "Notizbuch".to_string()
+    } else {
+        trimmed.to_string()
+    }
+}
+
+/// Ermittelt das Standard-Dokumentenverzeichnis ($XDG_DOCUMENTS_DIR mit Fallback ~/Documents).
+pub fn default_documents_dir() -> PathBuf {
+    if let Ok(dir) = std::env::var("XDG_DOCUMENTS_DIR") {
+        if !dir.trim().is_empty() {
+            return PathBuf::from(dir);
+        }
+    }
+
+    if let Ok(home) = std::env::var("HOME") {
+        if !home.trim().is_empty() {
+            return PathBuf::from(home).join("Documents");
+        }
+    }
+
+    PathBuf::from(".")
+}
+
+/// Ermittelt den kollisionsfreien Export-Pfad für ein Notizbuch im übergebenen Verzeichnis.
+/// Existiert die Datei bereits, wird ein Zähler angehängt (`_1`, `_2`, etc.).
+pub fn resolve_pdf_export_path_in_dir(dir: &Path, title: &str) -> PathBuf {
+    let sanitized_title = sanitize_filename_component(title);
+    let base_name = format!("{}.pdf", sanitized_title);
+    let primary_path = dir.join(&base_name);
+
+    if !primary_path.exists() {
+        return primary_path;
+    }
+
+    let mut counter = 1;
+    loop {
+        let candidate_name = format!("{}_{}.pdf", sanitized_title, counter);
+        let candidate_path = dir.join(candidate_name);
+        if !candidate_path.exists() {
+            return candidate_path;
+        }
+        counter += 1;
+    }
+}
+
+/// Ermittelt das Ziel für den PDF-Export unter Berücksichtigung von XDG_DOCUMENTS_DIR
+/// und automatischer Namenskollisionsvermeidung. Erstellt das Verzeichnis, falls nötig.
+pub fn resolve_pdf_export_path(title: &str) -> PathBuf {
+    let docs_dir = default_documents_dir();
+    let _ = std::fs::create_dir_all(&docs_dir);
+    resolve_pdf_export_path_in_dir(&docs_dir, title)
+}
+
 /// Wählbare Exportstrategie für Vektorstriche.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
 pub enum ExportStrategy {
@@ -819,4 +883,43 @@ mod tests {
         assert!(bytes.len() > 1024);
         assert!(bytes.starts_with(b"%PDF-1."));
     }
+
+    #[test]
+    fn test_sanitize_filename_component() {
+        assert_eq!(sanitize_filename_component("Notizbuch 1"), "Notizbuch 1");
+        assert_eq!(
+            sanitize_filename_component("Projekt/2026: Entwurf"),
+            "Projekt_2026_ Entwurf"
+        );
+        assert_eq!(sanitize_filename_component("   "), "Notizbuch");
+        assert_eq!(sanitize_filename_component(""), "Notizbuch");
+        assert_eq!(
+            sanitize_filename_component("Mathe * Vorlesung?"),
+            "Mathe _ Vorlesung_"
+        );
+    }
+
+    #[test]
+    fn test_resolve_pdf_export_path_collision_avoidance() {
+        let temp_dir = tempfile::tempdir().expect("Konnte tempdir nicht erstellen");
+        let dir = temp_dir.path();
+
+        // 1. Erstmaliger Export: keine Kollision
+        let path1 = resolve_pdf_export_path_in_dir(dir, "Mathe Vorlesung");
+        assert_eq!(path1, dir.join("Mathe Vorlesung.pdf"));
+
+        // Datei anlegen
+        std::fs::write(&path1, b"dummy pdf 1").expect("Konnte Datei nicht schreiben");
+
+        // 2. Zweiter Export: Kollision -> _1
+        let path2 = resolve_pdf_export_path_in_dir(dir, "Mathe Vorlesung");
+        assert_eq!(path2, dir.join("Mathe Vorlesung_1.pdf"));
+
+        // Zweite Datei anlegen
+        std::fs::write(&path2, b"dummy pdf 2").expect("Konnte Datei nicht schreiben");
+
+        // 3. Dritter Export: Kollision -> _2
+        let path3 = resolve_pdf_export_path_in_dir(dir, "Mathe Vorlesung");
+        assert_eq!(path3, dir.join("Mathe Vorlesung_2.pdf"));
+    }
 }

src/main.rs

@@ -16,7 +16,7 @@ use glam::Vec2;
 use ink_notes::autosave::{AutosaveController, AutosaveStatus};
 use ink_notes::canvas::CanvasState;
 use ink_notes::document::{Notebook, PageBackground};
-use ink_notes::export::{export_notebook_to_pdf, ExportStrategy};
+use ink_notes::export::{self, export_notebook_to_pdf, ExportStrategy};
 use ink_notes::geometry::{self, RecognizedShape};
 use ink_notes::selection::{
     render_selection_overlay, DragMode, SelectionHandleHit, SelectionState,
@@ -181,8 +181,10 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("  Strg + 0       : Zoom zurücksetzen (100% zentriert)");
     println!("  Draw-and-Hold  : Form am Strichende >400ms halten zum automatischen Einrasten");
     println!("  Strg + Z / Y   : Transaktionales Undo / Redo für alle Aktionen");
-    println!("  Strg + E / S   : Vektor-PDF-Export (nach ./export.pdf)");
+    println!("  Strg + E       : Vektor-PDF-Export (~/Documents/<Titel>.pdf)");
-    println!("  ESC / Q        : Beenden (mit sicherem Disk-Flush)");
+    println!("  Strg + S       : Jetzt speichern (Disk Flush)");
+    println!("  ESC            : Dialoge / Menüs schließen oder Selektion aufheben");
+    println!("  Strg + Q       : Beenden (mit sicherem Disk-Flush)");
 
     event_loop.run(move |event, target| {
         match event {
@@ -310,9 +312,29 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
                         match &logical_key {
                             Key::Named(NamedKey::Escape) => {
-                                println!("[Shutdown] Sichere alle ungespeicherten Daten auf Festplatte...");
+                                let mut changed = false;
-                                autosave.shutdown();
+                                if ui_state.is_pen_menu_open
-                                target.exit();
+                                    || ui_state.is_highlighter_menu_open
+                                    || ui_state.show_page_jump_popup
+                                    || ui_state.is_document_menu_open
+                                    || ui_state.is_update_dialog_open
+                                    || ui_state.show_updater_config
+                                {
+                                    ui_state.is_pen_menu_open = false;
+                                    ui_state.is_highlighter_menu_open = false;
+                                    ui_state.show_page_jump_popup = false;
+                                    ui_state.is_document_menu_open = false;
+                                    ui_state.is_update_dialog_open = false;
+                                    ui_state.show_updater_config = false;
+                                    changed = true;
+                                }
+ else if !selection_state.is_empty() {
+                                    selection_state.clear();
+                                    changed = true;
+                                }
+                                if changed {
+                                    window.request_redraw();
+                                }
                             }
 
                             // Undo: Strg + Z
@@ -383,31 +405,44 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                 }
                             }
 
-                            // PDF-Export: Strg + E oder Strg + S
+                            // Jetzt speichern (Disk Flush): Strg + S
-                            Key::Character(c)
+                            Key::Character(c) if c.eq_ignore_ascii_case("s") && ctrl => {
-                                if (c.eq_ignore_ascii_case("e") || c.eq_ignore_ascii_case("s"))
+                                autosave.flush();
-                                    && ctrl =>
+                                ui_state.set_export_message("Gespeichert");
-                            {
+                                update_window_title(
+                                    &window,
+                                    &notebook,
+                                    &manifest,
+                                    ui_state.active_tool,
+                                    autosave.status(),
+                                );
+                                window.request_redraw();
+                            }
+
+                            // PDF-Export: Strg + E
+                            Key::Character(c) if c.eq_ignore_ascii_case("e") && ctrl => {
                                 let notebook_clone = notebook.clone();
-                                let export_path = "export.pdf".to_string();
+                                let export_path = export::resolve_pdf_export_path(&manifest.title);
+                                let export_path_str = export_path.display().to_string();
                                 let window_ref = window.clone();
                                 println!(
                                     "[Export] Starte PDF-Vektorexport nach '{}' (im Hintergrundthread)...",
-                                    export_path
+                                    export_path_str
                                 );
-                                ui_state.set_export_message("Exportiere PDF...");
+                                ui_state.set_export_message(format!("PDF gespeichert: {}", export_path.display()));
+                                let export_path_thread = export_path.clone();
                                 std::thread::spawn(move || {
                                     let start = std::time::Instant::now();
                                     match export_notebook_to_pdf(
                                         &notebook_clone,
-                                        &export_path,
+                                        &export_path_thread,
                                         ExportStrategy::FilledPolygon,
                                     ) {
                                         Ok(()) => {
                                             let elapsed = start.elapsed();
                                             println!(
                                                 "[Export] PDF erfolgreich exportiert: '{}' ({:.1?} für {} Seiten)",
-                                                 export_path,
+                                                export_path_thread.display(),
                                                 elapsed,
                                                 notebook_clone.pages.len()
                                             );
@@ -418,10 +453,10 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                         }
                                     }
                                 });
-                                 ui_state.set_export_message("PDF erfolgreich als export.pdf exportiert!");
                                 window.request_redraw();
                             }
 
+
                             // Radierer umschalten: E
                             Key::Character(c) if c.eq_ignore_ascii_case("e") && !ctrl => {
                                 ui_state.active_tool = match ui_state.active_tool {
@@ -618,13 +653,14 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                 window.request_redraw();
                             }
 
-                            // Beenden: Q
+                            // Beenden: Strg + Q
-                            Key::Character(c) if c.eq_ignore_ascii_case("q") && !ctrl => {
+                            Key::Character(c) if c.eq_ignore_ascii_case("q") && ctrl => {
                                 println!("[Shutdown] Sichere alle ungespeicherten Daten auf Festplatte...");
                                 autosave.shutdown();
                                 target.exit();
                             }
 
+
                             _ => {}
                         }
                     }
@@ -1498,24 +1534,27 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                 }
                                 UiAction::ExportPdf => {
                                     let notebook_clone = notebook.clone();
-                                    let export_path = "export.pdf".to_string();
+                                    let export_path = export::resolve_pdf_export_path(&manifest.title);
+                                    let export_path_str = export_path.display().to_string();
                                     let window_ref = window.clone();
                                     println!(
                                         "[Export] Starte PDF-Vektorexport nach '{}' (im Hintergrundthread)...",
-                                        export_path
+                                        export_path_str
                                     );
+                                    ui_state.set_export_message(format!("PDF gespeichert: {}", export_path.display()));
+                                    let export_path_thread = export_path.clone();
                                     std::thread::spawn(move || {
                                         let start = std::time::Instant::now();
                                         match export_notebook_to_pdf(
                                             &notebook_clone,
-                                            &export_path,
+                                            &export_path_thread,
                                             ExportStrategy::FilledPolygon,
                                         ) {
                                             Ok(()) => {
                                                 let elapsed = start.elapsed();
                                                 println!(
                                                     "[Export] PDF erfolgreich exportiert: '{}' ({:.1?} für {} Seiten)",
-                                                    export_path,
+                                                    export_path_thread.display(),
                                                     elapsed,
                                                     notebook_clone.pages.len()
                                                 );
@@ -1526,9 +1565,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                             }
                                         }
                                     });
-                                    ui_state.set_export_message("PDF erfolgreich als export.pdf exportiert!");
                                     window.request_redraw();
                                 }
+
                                 UiAction::RefreshNotebooks => {
                                     ui_state.available_notebooks = storage::list_notebooks(&storage_base_dir);
                                     window.request_redraw();